hey Ryan,
your windows vista theme is great, I have included it modified on my site (http://soccer.apocalypse.pl. However, there are some issues about the CSS validation:

first, in typography .css it should not be .typography a:visted { but ".typography a:visited { ", and the second one:
the validator doesn't like
"filter: alpha(opacity=80);
opacity: 0.8;
-moz-opacity: 0.8;"
in layout.css, I'd rather replace it with a 1x1 px 80% transperent png and "background: url(../images/bg.png);" - the css validator likes it ;)